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Understanding Distance

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Questions and Answers

What is distance measured in?

only meters and centimeters

units like miles, kilometers, meters, centimeters, inches, and yards (correct)

only inches and yards

only miles and kilometers

Why do miles make sense on larger scales?

because they are smaller than centimeters

because they are larger than centimeters (correct)

because they are only used for distance

because they are always used for speed

What is the relationship between distance and change in position?

distance is never equal to change in position

distance is only used for change in position

distance is always equal to change in position

distance and change in position are related but not always the same (correct)

What does speed measure?

the rate at which your distance changes Signup and view all the answers

What can you do with distance?

use it to figure out your average speed Signup and view all the answers

What does a speed of 50 miles per hour mean?

You travel 50 miles every hour Signup and view all the answers

Why is it more useful to calculate average speed when your speed is changing constantly?

Because it gives a more accurate representation of your speed Signup and view all the answers

What is the unit of time usually used to measure speed?

Hours Signup and view all the answers

A car travels 75 miles in 3 hours. What is the average speed of the car?

30 miles per hour Signup and view all the answers

A girl travels 10 miles in 2 hours and then travels 5 miles in 1 hour. What is her average speed?

7.5 miles per hour Signup and view all the answers

Study Notes

What is Distance?

Distance is the amount of space between two things or people, or the amount something has moved, measured as a continuous line.
Units of measurement for distance include miles, kilometers, meters, centimeters, inches, and yards.
The choice of unit depends on the context, with miles suitable for larger scales and centimeters for smaller scales.

Distance vs. Change in Position

Distance traveled is related to a change in position, but they are not the same thing.
Change in position is the difference in where you are at two different times, while distance is the amount of space you've moved, regardless of direction.

Calculating Average Speed

Speed is the rate at which distance changes, measured in meters per second or miles per hour.
Average speed is calculated using the equation: average speed = total distance / total time.
The equation can be used to find average speed in various situations, such as calculating the average speed of a car or a bicycle.